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https://issues.apache.org/jira/browse/PHOENIX-3599?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Samarth Jain updated PHOENIX-3599:
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Issue Type: Sub-task (was: Task)
Parent: PHOENIX-1598
> Take advantage of EncodedQualifiersList when there is no order by/group by
> ---------------------------------------------------------------------------
>
> Key: PHOENIX-3599
> URL: https://issues.apache.org/jira/browse/PHOENIX-3599
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Samarth Jain
> Assignee: Samarth Jain
>
> The way we do work in our co-processors today allows us to take advantage of
> the EncodedColumnQualifiersCellsList only for cases when there is an order by
> or group by on the query (with our without a filter). We should be able to
> take advantage of this list in the other cases too. The way our co-processor
> is written, it is too late to pass in our custom list to the
> regionScanner.nextRaw() call. The list is already created in the HBase code
> and passed as a param to the scanner.nextRaw() call. We don't hit this
> scenario when we do order by or aggregation because in those cases phoenix
> does the work of aggregation or ordering itself and then passes to HBase a
> materialized result scanner. To be able to use the custom list
> implementation, we would need to enhance our EncodedColumnQualifiersCellsList
> to accept an additional list. We will also have to write or modify a
> co-processor that delegates the calls to the HRegionScanner by passing it our
> enhanced EncodedColumnQualifiersCellsList.
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